"concur on" is correct and can be used in written English.
It is often used to indicate that two or more people have come to an agreement. For example: "The board of directors concurred on the decision to implement a new policy."
The early Muslims did not immediately concur on what constituted their Sunnah.
But blocs will and must emerge for democracy to work, and the blocs of power in Egypt will not easily concur on what is to be done to end corruption, to launch democracy, to steer Egypt towards openness and modernization.
But most concur on one principle: "There is no one technology that will keep your kids safe," said Dr. Larry D. Rosen, a psychology professor at California State University, Dominguez Hills, who writes about raising a tech savvy generation.
The analysis may differ; the crucial flaw may vary from one account to another; but almost all of the players - generals, soldiers and analysts interviewed by the Guardian this week - concur on one point: the Iraq operation, including Britain's part in it, was an avoidable disaster.
While these experts did not always concur, on one thing they were in perfect harmony: future cruise takers must be counseled to get them on the right ship the first time out; the phrase the agents kept using was "the client must be qualified".
"Although figures vary widely with regard to drone attack estimates, all studies concur on one important point: there has been a dramatic increase in their use over the past three years," Heyns said.
Jonathan and I concur on every detail but one.
But in testimony to the House International Relations Committee, Mr. Kean said that "as I've read it in the newspapers, I think Senator Roberts's proposal is a constructive alternative" and "the one thing we do concur on absolutely is that the present situation is unacceptable and has to be changed".
In most dialogues, however, the speakers clearly concur on a certain philosophical issue or one of the positions defended by a particular disputant is clearly more convincing than the positions defended by others.
Most scientists concur on the basics.
It is also important that you and your wife truly concur on this matter.
